Writing a successful post is subjective: it depends on what you consider successful, the content you’re covering, what readers want to see, etc. However, there a few things "successful" posts have in common.
- Brevity. Try to keep your posts fairly short. If your readers have to scroll down too far, they will likely lose interest. Remember it’s not as easy to read on screen.
- Humor. People love to laugh. Try to find a humorous way of telling a story.
- Relevance. People like a sense of community. Try to find a subject that will relate to many people.
- Topical. Instead of giving a laundry list of "what I did today", consider choosing one thing you did and expand on that. It makes for a more cohesive, essay-type post, which is generally easier to follow.
- Indent. Frequent paragraph indentations are much easier on the eyes, and they make the post feel shorter than it is.
- Style. Good grammar and punctuation really do matter.